NPPES file of Aug 9, 2026

Yunsan Huang, MD

Internal Medicine Physician · Irvine, CA

Yunsan Huang, MD is an internal medicine physician with a practice address in Irvine, California, and NPI 1306095963, issued on Sep 18, 2008. Check the license (California A128784, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1306095963
Name
Yunsan Huang
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
A128784 CA
036121740 IL
Self-reported in NPPES; status is on the state search
Practice location
1 Medical Plaza Drive, Irvine, CA 92697
Phone
(949) 824-8600
Enumerated
Sep 18, 2008
Record last updated
Jan 24, 2023
Medicaid ID
036121740 IL
Medicare enrollment
Enrolled (PECOS I20140602001539); accepts Medicare assignment
Medical or professional school
Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 2006
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1 Medical Plaza Drive

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Patrick Ahern, MDPain Medicine (Anesthesiology) Physician1154883072
  2. Anna Betlachin, MDEndocrinology, Diabetes & Metabolism Physician1396190567
  3. Patrick Chen, M.D.Neurocritical Care Physician1295198000
  4. Maria Corona, PHDClinical Neuropsychologist1487912960
  5. Chloe Courchesne, MDFamily Medicine Physician1255864021
  6. Erin Fromm, FNP-CFamily Nurse Practitioner1073255238

Verify Yunsan Huang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A128784
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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52% fewer Medicare Part D claims than the average internal medicine physician in 2024

1,509 Medicare Part D claims for 277 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 19 claims were for opioids.

  1. Yunsan Huang1,509
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium149 claims
  2. Amlodipine Besylate91 claims
  3. Levothyroxine Sodium60 claims
  4. Rosuvastatin Calcium52 claims
  5. Omeprazole47 claims
  6. Losartan Potassium46 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. UC RegentsOrange, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Yunsan Huang among 17,696 internal medicine physician records in California

Yunsan Huang, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.

  • NPI issued2008 · 56% of these records are older, 40% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2006 · median 2004 among the 11,065 with a school on file
  • Record last updated2023 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

155 internal medicine physician records list a practice address in Irvine

They are 155 of the 7,778 NPPES records with a practice address in Irvine, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Terese Bergheim, M.D.Irvine, CA 926971194146688
  2. Shilrey Contreras, M.D.Irvine, CA 926971366599532
  3. Miki Csintalan, MDIrvine, CA 926971609924661
  4. Daniel Otterson, MDIrvine, CA 926971093210973
  5. Bobby Sasson, M.D., M.P.H.Irvine, CA 926971528181344
  6. Henry Tsai, M.D.Irvine, CA 926971982772463
  7. Katarina Veskovic, M.D.Irvine, CA 926971114000999
  8. Alice Wong, MDIrvine, CA 926971295801546

Common questions

What is Yunsan Huang, MD's NPI number?

Yunsan Huang, MD's National Provider Identifier (NPI) is 1306095963, issued on Sep 18, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Yunsan Huang, MD located?

The NPPES record lists a practice address at 1 Medical Plaza Drive, Irvine, CA, 92697. Phone: (949) 824-8600. Providers update this record themselves, so call before visiting.

How can I verify Yunsan Huang, MD's license?

NPPES lists California license number A128784, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Yunsan Huang, MD prescribe under Medicare Part D?

In 2024, Yunsan Huang, MD had 1,509 Medicare Part D claims for 277 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.